Buckle



W. BLUM.

(No Model.)

BUCKLE.

No. 407,919. Patented July 30, 1889.

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A TTOR/VEYS.

UNITED STATES PATENT OFFIcE.

VVILLIALWI BLUM, OENEVVARK, NEW JERSEY.

BUCKLE.

SPECIFICATION forming part of Letters Patent No. 467,919, dated July 30, 1889.

Application filed April 29, 1889. Serial No. 308,916. (No model.)

To all whom it may concern: I

Be it known that 1, WILLIAM BLUM, of Newark, in the county of Essex and State of New Jersey, have invented a new and Improved Buckle, of which the following is a full, clear,- and exact description.

The object of the invention is to provide an improved buckle, in which the tongue is positively locked against the buckle-frame.

The invention consists in the novel construction and combination of parts, as hereinafter described and claimed.

- Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of my improved buckle, showing it applied to astrap and in its locked position. Fig. 2 is a plan view of the buckle and its key, partly in section. Fig. 3 is a cross-section on line 00 0c of Fig. 2, and Fig. i is a side view of the locking-bar detached.

The buckle-frame A is formed with its front bar a made hollow and notched ate for the entrance of the end or point of the buckletongue B,which latter is, as usual, pivoted to the buckle-frame to swing against the front bar a. ithin the angular bore of the bar a is fitted the spring-actuated locking-bar O, which is formed angular at its inner end a to prevent its turning, and is rounded at its outer end 0' to enable it to be provided with threads 0 the said threaded end being adapted to receive the internally-threaded key D, for partly withdrawing the said locking-bar against the tension of its spring.

The spring 0 of the locking-bar C abuts at its inner end against the enlargement c and at its outer end against a ring or washer E, that is secured to the bar a at its open end and serves to retain the locking-bar and its spring in place.

The bar 0 is formed with a notch 0 a longitudinal slot 0 extending from the bottom of said notch for locking the tongue, as follows: The key D when screwed onto the locking-bar moves the said bar outward to bring its notch 0 into register with the notch a of the bar a, and upon the key being removed from'said locking-bar the spring 0' moves the latter inward, and thus moves its notched portion 0 out of register with the notch a, and prevents the withdrawal of the tongue.

To unlock the buckle, the key is screwed onto the locking-bar until the notch 0 thereof is brought into register with the notch a, whereupon the tongue may be freely swung away from the bar c.

Having thus described my invention, I claim asnew and desire to secure by Letters Patent 1. The combination, in a buckle, of the buckle-frame provided with a pivoted tongue and having the front bar thereof made hollow, the spring-actuated locking-bar longitudinally movable in said bar, and formed with a longitudinal slot and with a notch or recess leading to said slot, for allowing entrance of the buckle-tongue, substantially as described.

2. In a buckle, the combination, with the buckle-frame having its front bar made hollow and its tongue pivoted to swing against said hollow bar, the latter having a notch for receiving the point of the tongue, of the longitudinally-movable spring-actuated lockingbar fitted in said hollow bar and having a round threaded endand made angular in crosssection for a portion of its length, and formed also with a longitudinal slot and a notch or recess leading to said slot and allowing en- 

